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https://dev.mysql.com/doc/refman/8.0/en/federated-storage-engine.html
Querying a local FEDERATED table automatically pulls the data from the remote (federated) tables. The FEDERATED storage engine lets you access data from a remote MySQL database without using replication or cluster technology. To include the ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-member-actions.html
The Performance Schema table replication_group_member_actions lists the member actions that are available in the configuration, the events that trigger them, and whether or not they are currently enabled. The ... From MySQL 8.0.26, Group Replication ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-responses-failure-rejoin.html
While an auto-rejoin procedure is taking place, the Performance Schema table events_stages_current shows the event “Undergoing auto-rejoin procedure”, with the number of retries that have been attempted so far during this instance of the ... The ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-secure-user.html
State transfer from the binary log requires a replication user with the correct permissions so that Group Replication can establish direct member-to-member replication channels. To secure the user credentials, you can require SSL for connections ...
https://dev.mysql.com/doc/refman/8.0/en/index-preloading.html
Preloading enables you to put the table index blocks into a key cache buffer in the most efficient way: by reading the index blocks from disk sequentially. If there are enough blocks in a key cache to hold blocks of an entire index, or at least the ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-deadlocks.html
A deadlock can occur when transactions lock rows in multiple tables (through statements such as UPDATE or SELECT ... A deadlock is a situation in which multiple transactions are unable to proceed because each transaction holds a lock that is needed ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached.html
The InnoDB memcached plugin (daemon_memcached) provides an integrated memcached daemon that automatically stores and retrieves data from InnoDB tables, turning the MySQL server into a fast “key-value store”. You can also access the same InnoDB ... Important The InnoDB memcached plugin was removed in MySQL 8.3.0, and was deprecated in MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-performance-compression-oltp.html
The rise of SSD storage devices, which are fast but relatively small and expensive, makes compression attractive also for OLTP workloads: high-traffic, interactive websites can reduce their storage requirements and their I/O operations per second ...
https://dev.mysql.com/doc/refman/8.0/en/installation-layouts.html
Section 2.3.1, “MySQL Installation Layout on Microsoft Windows” Section 2.8.3, “MySQL Layout for Source Installation” Table 2.3, “MySQL Installation Layout for Generic Unix/Linux Binary Package” Table 2.12, “MySQL Installation Layout ... The installation layout differs for different installation types (for example, native packages, binary tarballs, and source tarballs), which can lead to confusion when managing different systems or using different installation ...
https://dev.mysql.com/doc/refman/8.0/en/keyring-hashicorp-plugin.html
Extract the content of the archive to produce the executable vault command, which is used to perform HashiCorp Vault operations. The keyring_hashicorp plugin supports the configuration parameters shown in the following table. As indicated by the ...